Having always had standard tranmission cars, I have a question concerning the automatic C220 my mother purchased new. The car is a 95 with only 19,000 city miles on it. I did the search and still have some questions. Does this car have a dipstick? There is a cap with a lock on it which says to maintain by M-B dealer only. Can I remove this cap and check the A/T? Should I change the fluid and use Mobil Synthetic. It is not the smoothest shifting car especially when it is cold.

The C220 has a dipstick. You can mess with it if you want.
I'd only use the synthetic fluid if it specifically states it's compatable with transmissions requiring Dexron III/Mercon fluid.

The car has an upshift delay system which helps warm up the catalytic converters faster, so the harsh shifting especially cold may be normal.

Gilly

Thanks Gilly for the quick response. I feel a little better now.